Channeling-tool.



G. W. CARTER.

UHANNELING TOOL.

I APPLIOATION FILED AUG. 23, 1910.

1,015,377. Patented Jan. 23, 1912.

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enoner; w. CARTER, or NORWASi',.MAINE, nss'renon rounrrnnsnon MACHINERYCOMPANY, or PA'rERsON, NEW JERSEY, A CORPORATION or NEW JERSEY.

, oHANNELING-roon.

Specificationof Letters Patent.

To all whom it may concern:

' Be it known that I, GEORGE W. CARTER, a citizen of the United States,residing at Norway, in the countyof Oxford and State of Maine, haveinvented ,certainlmprove ments in Channeling-Tools, of which the,

following description, in connection with g the accompanying drawings,is a specification, like reference characters'on the drawings indicatinglike parts in the several figin which a great variety of channeling orgrooving. knives may be used; which" shall be capable of readyadjustment to meet the requirements of different kinds of work;

and particularly, to, provide a tool which may be guided with .ease andcertainty toinsure the production of uniform results.

To these ends the invention comprises a novel arrangement of thechanneling or grooving knives relative to the toolhandle, a

novel construction of the mounting forthe knife, and other features thatwill be pointed out in the claims. p shown embodied in a tool designedespecially for use in hand The invention is herein shoe making andrepairing and the s,ev-

eral features of the invention will be made clear in the followingdescription referring thereto" Referring to the drawings, Figure '1 is aviewin side elevationof the toolfas is ,held by the workman when in use;Fig. 2 is; a perspective view of the body ofythe tool and the partscarriedthereby; and Fig. 3 is an elevation showing the tool in.operation upon an outsole.

The tool comprises a handle 2 of suitable form to be graspedconveniently by the workman and a head 4: at the lower end' of thehandle. The tool is designed for opera ative movement in the directionindicated by the arrow in Fig.1 and the handle is offset from the headin the directionof said movement. A vertical slot is formed in the head4 to receive the channeling knife 6. This knife may be adjustedvertically in the slot and secured in adjusted position byi-the clampingscrew 8, the rear edge of thehead being notche'd to let the screw headwell into the body of the part 4. The knife shown is one of a type usedin a commercial channel ing machine and is designed to cut a channel ofthe style shown in Fig. 3, this being a form of channel frequently cutin outsoles to receive the line ofstitches by which the outsole issecured to the welt.

Itwill be obvious that a great variety of knives for channeling orgrooving, having cu-ting edges of 'difierent shapes and extending atdifferent angles depending upon ,the style-of channel or groove desired,may

be used in Place of the one. shownfi It should be noted that-the body of:the

knife and the vertical portion of its cutting edge lie substantially inwhat may Patented Jan. 23,1912.

termed thel'median plane of the handle, that I is, the plane that passesthrough the longi tudinal median line of the handle. This constructionis most clearly indicateddn Fig. 3 whichshow-s the relation of thehandle2 to the cutting edge ofthe knife '6 as the latter channelsthe'sole 1. By this construction' and by having the handle offset fromthehead, as shown, the-"pull on the tool [head is "exerted directly inthe line of the cutting movement of the knife; and the opl eratortherefore is enabledto applyforce to the tool close to the point ofgreatest resistance and directly 'in front of and. in line with theknife. Consequently he can guide the tool with greater accuracy thanwould be the case if the knife were located at one side'orj tlie'otheroftlie lineof pull. It will be obvious that with the latter constructionthe resistance met bythe knife in cutting through the leather would tendto turn the -.tool andcause the knife to run off to one side of thedesired path.

Thework engaging face of the tool has two surfaces that lie at an angleto each other and" meet to form agridge 10 which is rounded off smoothlyand extends trans' versely across the tool atsubstantially right anglesto the direction of operative'movement ofthe tool. The cutting edge ofthe knife 6 projects through the face of the tool at substantially thesummit of this ridge.

This arrangement is of particular advantage in using a knife of the typeshown have in a lip or flange extendingsubstantially pa i'allel with theface of'the tool head, since it provides ample clearance space for thepaaterial to pass between the lip and tool ace.

To aid the workman in guiding the tool, an edge guiding roll 12 isprovided. This roll is rotatably supported on a stud 14 received in avertical slot 16 which is cut through the head 4 and opens into the faceof the tool along the ridge 10. The stud 14 has a shoulder 18 thereon toengage the face of the tool at opposite sides of the slot 16. The rollwith its stud may be adjusted along the ridge toward and from the knife6 and may be secured in adjusted position by the clamping nut 20threaded on to the stud 14 where it projects through the upper side ofthe tool head.

In using this tool the workman first adjusts the knife 6 so that it willcut a channel of the required depth and adjusts the roll 12 to guide theknife at the required distance from the edge of the sole or other pieceof leather under operation. He then grasps the handle and places theguiding roll against the edge of the outsole, assuming this to be thearticle to be channeled, the parts occupying the relative positionsindicated in Fig. 3. By pressing upon the tool and drawing it towardhim, the workman sinks the knife into the stock and it cuts the channel.The fact that the channeling knife lies directly in the line of pullexertedjby the workman on the tool reduces to aminimum the tendency ofthe knife to run off to one side or the other of the desired 'line ofcut and, as above eX- plainedacontributes to the ease with whichth'eftool may be guided.

Tools of this character are used chiefly by shoemakers in the operationof resoling shoes, and in order to facilitate this operation I haveprovided the tool shown with a stitch cutting knife 22. The shank ofthis knife is inserted in a hole drilled for that purpose in the end ofthe handle opposite the head 4 and a set screw 24 is threaded into thehandle in position to bear against the shank and clamp it securely inplace. The knife 22 is grooved or V-shaped in cross section and has acutting edge formed at its end. This knife is intended to be run alongthe stitches of the outseam on top of the welt to cut off the exposedloops. The old outsole may then be pried ofi by forcing a screw driveror similar instrument in between the welt and outsole.

Having described my invention, what I claim as new and desire to secureby Letters Patent of the United States is:

1. A tool of the character described comprising a tool head, a knifesupported by said head, a guide carried by the head in cooperativerelationship wit-h the knife, and

a handle offset from the head substantially lar work engaging face, thesurfaces of which meet in a ridge that extends across the facetransversely of the direction of operative movement of the tool, a knifevertically adjustable in said head with its cutting edge extendingthrough the summit of said ridge, means for holding said knife inadjusted position, an edge guide adjustable along said ridge toward andfrom said knife, and means for holding said guide in adjusted position.

3. A tool of the character described comprising a tool head, a knifesupported in said head, the face of the tool head being cut away behindthe cutting edge of the knife to form a clearance space, an edge guidingroll supported by the head for adjustment toward and from said knife ina plane transverse to the direction of operative movement of the tooland a handle rigid with said head and having its median line enteringsaid head at a point in front of said knife and substantially in theplane of the knife. 4. A tool of the character described comprising atool head, a handle integral therewith but offset from said head in thedirection of operative movement of .the tool, said head having anangular work engaging face with a rounded ridge extending across itsubstantially at right angles to the direction of operative movement ofthe tool, the surfaces of said face sloping away from said ridge to thefront and rear edges of the head, said head having a vertical slotformed therein, a channeling knife adjustably positioned in said slotwith its cutting edge projecting through the summit of said ridge, themedian plane of said handle passing through the cutting edge of saidknife, a clamping screw for holding said knife in adjusted posit-ion, anedge guiding roll, and a shouldered stud supporting the same, said studbeing adjustable toward and from said knife in a slot formed throughsaid head and opening into the face thereof along the summit of saidridge.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

GEORGE W. CARTER.

Witnesses:

JOHN H; MoCREADY, JAMES R. HODDER.

Copies of this patent may be obtained for five cents each, by addressingthe Washington, D. 0.

